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Review

Nanostructured Semiconducting Metal Oxide Gas Sensors for Acetaldehyde Detection

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Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
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The Research Institute of Industrial Science, Hanyang University, Seoul 04763, Korea
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Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Korea
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Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea
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Department of Engineering, University of Messina, 98166 Messina, Italy
*
Authors to whom correspondence should be addressed.
Chemosensors 2019, 7(4), 56; https://doi.org/10.3390/chemosensors7040056
Received: 26 August 2019 / Revised: 28 October 2019 / Accepted: 8 November 2019 / Published: 13 November 2019
Volatile organic compounds (VOCs) are among the most abundant air pollutants. Their high concentrations can adversely affect the human body, and therefore, early detection of VOCs is of outmost importance. Among the different VOCs, in this review paper we have focused our attention to the monitoring of acetaldehyde by chemiresistive gas sensors fabricated from nanostructured semiconducting metal oxides. These sensors can not only provide a high sensing signal for detection of acetaldehyde but also high thermal and mechanical stability along with a low price. This review paper is divided into three major sections. First, we will introduce acetaldehyde as an important VOC and the importance of its detection. Then, the fundamentals of chemiresistive gas sensors will be briefly presented, and in the last section, a survey of the literature on acetaldehyde gas sensors will be presented. The working mechanism of acetaldehyde sensors, their structures, and configurations are reviewed. Finally, the future development outlook and potential applications are discussed, giving a complete panoramic view for researchers working and interested in acetaldehyde detection for different purposes in many fundamental and applicative fields. View Full-Text
Keywords: acetaldehyde; chemiresistive gas sensor; nanostructured metal oxide; sensing mechanism acetaldehyde; chemiresistive gas sensor; nanostructured metal oxide; sensing mechanism
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MDPI and ACS Style

Mirzaei, A.; Kim, H.W.; Kim, S.S.; Neri, G. Nanostructured Semiconducting Metal Oxide Gas Sensors for Acetaldehyde Detection. Chemosensors 2019, 7, 56. https://doi.org/10.3390/chemosensors7040056

AMA Style

Mirzaei A, Kim HW, Kim SS, Neri G. Nanostructured Semiconducting Metal Oxide Gas Sensors for Acetaldehyde Detection. Chemosensors. 2019; 7(4):56. https://doi.org/10.3390/chemosensors7040056

Chicago/Turabian Style

Mirzaei, Ali, Hyoun W. Kim, Sang S. Kim, and Giovanni Neri. 2019. "Nanostructured Semiconducting Metal Oxide Gas Sensors for Acetaldehyde Detection" Chemosensors 7, no. 4: 56. https://doi.org/10.3390/chemosensors7040056

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